2:31 PM

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28/12/2009

• Food Additives
• L.O.
• I know that food consists of chemicals and that
  some additives are harmful.
• I can state the 4 main types of food additives.
• I know what active packaging is and why it is used

231 PM
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Homework

• Produce a leaflet explaining why
• tartrazine (a yellow food colouring)
• has been taken out of most foods.

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Preventing Apple Browning

• Method
• At start At end of lesson
• 1. Freshly cut apple
• 2. Apple slice soaked in lemon juice
• 3. Apple slice soaked in ascorbic acid

1 2 3
1 2 3
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Name some sources of proteins and carbohydrates.
Proteins Carbohydrates


Egg
Potatoes
Pasta
Meat
Bread
Fish
Rice
Nuts
Sugar
Cheese
Beans
231 PM
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How cooking affects protein molecules
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Anagrams of the 4 food additives

• Xintasoadint
• Ofod locusro
• Fiersmulise
• Vorufal hnecrsane

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Preventing Apple Browning

• Method
• At start At end of lesson
• 1. Freshly cut apple
• 2. Apple slice soaked in lemon juice
• 3. Apple slice soaked in ascorbic acid

1 2 3
1 2 3
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Food Additives

• The 4 main types of food additives are
• antioxidants (stop food reacting with oxygen)
• food colours (make the food look better)
• emulsifiers (help the constituents mix)
• flavour enhancers (improve the taste)

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Question Which food type is there most of in
100g?Is there more salt or fat in 100g of beans?
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• Find 5 other food labels
• Which food gives you the most protein?
• b)Which food contains the most fat?
• c)Look for anti-oxidants E297-E321, which foods
  contain antioxidants?

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• Find 5 other food labels
• Which food gives you the most protein?
• Fish 14.5g, Chicken 14.8g and Pork 23.9g
• Which food contains the most fat?
• Look for anti-oxidants E297-E321, which foods
  contain antioxidants?

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• Find 5 other food labels
• Which food gives you the most protein?
• Fish 14.5g, Chicken 14.8g and Pork 23.9g
• Which food contains the most fat?
• Walker crisps 34.0g, Prune walnut log - 27.9g
• Look for anti-oxidants E297-E321, which foods
  contain antioxidants?

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• Find 5 other food labels
• Which food gives you the most protein?
• Fish 14.5g, Chicken 14.8g and Pork 23.9g
• Which food contains the most fat?
• Walker crisps 34.0g, Prune walnut log - 27.9g
• Look for anti-oxidants E297-E321, which foods
  contain antioxidants?

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(No Transcript)
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How does this packaging keep the food fresh?